IABSD.fr/xenocara/lib/mesa/src/mapi/glapi/glapi_dispatch.c

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• Author : jsg
  Date : 2025-06-05 11:23:11
  Hash : 67d6f117
  Message : Import Mesa 25.0.7

• lib/mesa/src/mapi/glapi/glapi_dispatch.c

• /*
   * Mesa 3-D graphics library
   *
   * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   */
  
  
  /**
   * \file glapi_dispatch.c
   *
   * This file generates all the gl* function entrypoints.  This code is not
   * used if optimized assembly stubs are available (e.g., using
   * glapi/glapi_x86.S on IA32 or glapi/glapi_sparc.S on SPARC).
   *
   * \note
   * This file is also used to build the client-side libGL that loads DRI-based
   * device drivers.  At build-time it is symlinked to src/glx.
   *
   * \author Brian Paul <brian@precisioninsight.com>
   */
  
  #include "glapi/glapi_priv.h"
  #include "glapitable.h"
  
  
  #if !(defined(USE_X86_ASM) || defined(USE_X86_64_ASM) || defined(USE_SPARC_ASM))
  
  #if defined(_WIN32)
  #define KEYWORD1 GLAPI
  #else
  #define KEYWORD1 PUBLIC
  #endif
  
  #define KEYWORD2 GLAPIENTRY
  
  #define NAME(func)  gl##func
  
  #if 0  /* Use this to log GL calls to stdout (for debug only!) */
  
  #define F stdout
  #define DISPATCH(FUNC, ARGS, MESSAGE)		\
     fprintf MESSAGE;				\
     GET_DISPATCH()->FUNC ARGS
  
  #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) 	\
     fprintf MESSAGE;				\
     return GET_DISPATCH()->FUNC ARGS
  
  #else
  
  #define DISPATCH(FUNC, ARGS, MESSAGE)		\
     GET_DISPATCH()->FUNC ARGS
  
  #define RETURN_DISPATCH(FUNC, ARGS, MESSAGE) 	\
     return GET_DISPATCH()->FUNC ARGS
  
  #endif /* logging */
  
  /* Enable frame pointer elimination on Windows, otherwise forgetting to add
   * GLAPIENTRY to _mesa_* entrypoints will not cause crashes on debug builds, as
   * the initial ESP value is saved in the EBP in the function prologue, then
   * restored on the epilogue, clobbering any corruption in the ESP pointer due
   * to mismatch in the callee calling convention.
   *
   * On MSVC it's not sufficient to enable /Oy -- other optimizations must be
   * enabled or frame pointer will be used regardless.
   *
   * We don't do this when NDEBUG is defined since, frame pointer omission
   * optimization compiler flag are already specified on release builds, and
   * because on profile builds we must have frame pointers or certain profilers
   * might fail to unwind the stack.
   */
  #if defined(_WIN32) && !defined(NDEBUG)
  #  if defined(_MSC_VER)
  #    pragma optimize( "gty", on )
  #  elif defined(__GNUC__)
  #    pragma GCC optimize ("omit-frame-pointer")
  #  endif
  #endif
  
  #include "glapitemp.h"
  
  #endif /* USE_X86_ASM */